/**
 * Fetches the IndieAuth client metadata.
 *
 * Clients SHOULD publish an OAuth Client ID Metadata Document (a JSON document)
 * at the client identifier URL. The authorization server SHOULD fetch the URL
 * to find more information about the client.
 *
 * @see [Client Metadata - IndieAuth spec](https://indieauth.spec.indieweb.org/#client-metadata)
 * @see [OAuth Client ID Metadata Document](https://datatracker.ietf.org/doc/html/draft-parecki-oauth-client-id-metadata-document)
 * @see [RFC7591 - OAuth 2.0 Dynamic Client Registration Protocol](https://datatracker.ietf.org/doc/html/rfc7591)
 */
export declare const clientMetadata: (client_id: string) => Promise<{
    error: Error;
    value?: undefined;
} | {
    value: {
        client_name?: string | undefined;
        logo_uri?: string | undefined;
        redirect_uris?: string[] | undefined;
        client_id: string;
        client_uri: string;
    };
    error?: undefined;
}>;
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